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Fig. 9 | BMC Genomics

Fig. 9

From: Ceratocystis cacaofunesta genome analysis reveals a large expansion of extracellular phosphatidylinositol-specific phospholipase-C genes (PI-PLC)

Fig. 9

Hypothetic model for a possible role of secreted Ceratocystis PI-PLCs in the context of Ceratocystis Wilt of cacao. The fungal moving into parenchyma of vascular system grow and degrading life primary host plant walls, using a variety of CAZymes including celullases. PI-PLCs proteins have the putative ability to recognize inositol and catalyze the cleavage of phosphatidylinositol (PI) substrates present in the host membranes and could rapid destroy the stability of the cell, specifically the typical structured berried formed by the plant called tyloses. The genome arsenal together with several secreted PI-PLCs proteins produced by C. cacaofunesta, rapidly causing necrosis and degrading the vascular system in cacao plants. Also C. cacaofunesta PI-PLCs potentially cleave glycosylphosphatidylinositol (GPI) anchors proteins present in the surface of the both fungal and plant membranes. These GPI released proteins could for instance produce chitin residues which could elicit plant defense responses, GHs could help to hydrolyze the plant cell wall an arsenal of proteins involved in plant-fungal interaction. Ultimately, secreted PI-PLC of C. cacaofunesta could amplify both signals of the pathogenesis of the fungus and host defenses

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